Anti-Slippery Footwear

ABSTRACT

An anti-slippery footwear includes a sock, an insole, and an attaching structure formed on the attaching surfaces of the sock and insole. The attaching structure has a first attaching portion and a second attaching portion to provide anti-slippery effect while being attached with each other. At least one of the attaching surfaces of the sock and the insole has a recessed portion to accommodate at least one of the first and second attaching portions therein. The joining portions of the attaching structures are slightly lower than the attaching surface of the sock or the insole, such that when the individual wearing the sock is trying to put on a shoe that has the insole, the first and second attaching structures will not attach with each other before the shoe is properly worn by the individual. Instead, the first and second attaching structures will attach to each other only after the shoe is properly worn and a downward pressure is applied thereto.

BACKGROUND

The present invention relates in general to an anti-slippery footwear, and more particularly, to a set of sock and insole attachable to each other after being pressed against each other.

Before putting on shoes, socks are typically worn to improve the flexibility, protection and warmth of our feet. To avoid the exactly-matching size of shoes that pressurizes the feet, a slightly larger size of shoes is typically preferred. Therefore, a gap between the feet and the shoes is existed; and therefore, the feet are likely to slip within the shoes because the socks are typically made of woven material, and the insoles of the shoes are typically made smooth. In the occasion that rapid movement is desired, such slippery effect may cause injury.

To overcome such problem, several anti-slippery structures between the socks and the insoles have been developed. Various structures have been disclosed in the patents No. WO 01/65959, WO 99/44449, U.S. Pat. No. 6,880,268, U.S. Pat. No. 3,059,350, JP 60/34603 and GB 2309625. In the U.S. Pat. No. 3,059,350, a front retaining member and a rear retaining member are formed on the top surface of a sandal. In the Great Britain Patent No. 2309625, a plurality of adhesive straps is formed on the bottom surface of the sock to attach the insole or shoe pad to achieve anti-slippery effect. In WO 01/65959, the mutually adhesive straps are attached to the heel-portion of the sock and the insole.

Among all structures as disclosed above, the sock and the insole are attached to each other before the foot is properly positioned within the shoe, such that the sock is easily displaced before the shoe is properly worn by the user. The repositioning of the socks often causes lumps or displacement of the insole, which again, make the foot uncomfortable.

BRIEF SUMMARY

A set of sock and insole is provided to prevent the foot from slipping within the shoe. The set of sock and insole allows the individual to put on the shoe and adjust the position of the foot within the shoe before the sock and insole are attach to each other. Therefore, the discomfort caused by repositioning the foot and the sock will be avoided.

An anti-slippery footwear of the present invention includes an insole, a sock and an attaching structure. The insole has a first attaching surface. The sock has a second attaching surface. The attaching structure includes a first attaching portion formed on the first attaching surface and a second attaching portion formed on the second attaching surface. At least one of the first and the second attaching portion is recessed from the corresponding attaching surface, such that the first and second attaching portion are removably attached together only when being pressed against each other.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which:

FIG. 1 shows an exploded view of a set of anti-slippery sock and shoe;

FIG. 2 shows the perspective view of the sock and the shoe before attaching to each other;

FIGS. 3A to 3C show the attachment of the sock and the shoe;

FIG. 4 shows another embodiment of the anti-slippery sock and shoe;

FIG. 5 shows yet another embodiment of the anti-slippery sock and shoe;

FIG. 6 shows an insole with an attaching structure formed integrally therewith;

FIG. 7 shows the cross-sectional view of FIG. 6 along line X-X; and

FIG. 8 shows a modification of the anti-slippery sock and shoe

DETAILED DESCRIPTION

A set of sock and insole is provided and illustrated in FIG. 1. As shown, the set of sock and insole includes a sock 10, an insole 20 and an attaching structure 30. The sock 10 includes a bottom surface 11 to be attached to a corresponding surface 21 of the insole 11. The attaching structure 30 is formed on the attaching surfaces 11 and 21.

Preferably, at least one of the bottom surface 11 of the sock 10 and the top surface 21 of the insole 20 has a recessed portion. For example, the bottom surface 11 has a recessed structure 15 as shown in FIGS. 1, 2 and 3, or the top surface 21 has a recessed structure 25 as shown in FIG. 4. The recessed structures 15 and 25 can be in the form of recessed holes or stripes. As shown in FIG. 1, the recessed structure 15 includes a plurality of recessed grooves formed on the bottom surface 11 of the sock 10. The attaching structure 30 includes a first attaching portion 31 formed in the recessed grooves 15 and a second attaching portion 35 formed on the surface 21 of the insole 20. The first and second attaching portions 31 and 35 of the attaching structure 30 include the detachable adhesive or attaching structures such as Velcro or temporary adhesive, for example.

As the first attaching portion 31 of the attaching structure 30 is not in contact with the second attaching portion 35 of the attaching structure 30 at the time the individual is putting on the shoe, the individual can easily adjust the position of the foot as well as the sock 10 within the shoe without being stuck by the insole 20. Once the position of the foot and the sock 10 is properly adjusted, the first attaching portion 31 can be brought in contact with the second attaching portion 35 when the individual applies a force thereon by stomping the foot or simply standing up. Thereby, the sock 10 and the insole 20 are attached to each other to avoid slippage.

The application is illustrated in FIG. 3. As shown, when the foot wearing the sock 10 entering the shoe, the first attaching portion 31 formed on the sock 10 will not attach the second attaching portion 35 formed on the insole 20 as shown in FIG. 3A. When the foot is properly positioned and stepping downward, the sock 10 or the insole 20 are pressed against each other as shown in FIG. 3B. Thereby, the first attaching portion 31 of the attaching structure 30 is exposed and in contact with the second attaching portion 35. The first and second attaching portions 31 and 35 are thus attached to each other as shown in FIG. 3C to provide the anti-slippery effect without causing any discomfort to the individual.

FIG. 5 shows another embodiment in which both the attaching surfaces 11 and 21 include the recessed structures 15 and 25, and the attaching portions 31 and 35 are formed within the recessed structures 15 and 25 only. Similar to the above embodiments, the sock 10 and the insole 20 will only attach each other while being pressed against each other. Therefore, the discomfort caused by the reposition of sock 10 and foot is prevented.

In FIGS. 6 and 7, the insole 20 and the attaching structures 31 and are formed integrally, and the material for forming the insole 20 and the attaching structures 31 and 35 includes foam.

As shown in FIG. 8, the first and second attaching portions 31 and 35 are formed on the attaching surfaces 11 and 20, respectively, and attaching sheets 17 and 27 are used to cover the first and second attaching portions 31 and 35. As shown, each of the attaching sheets 17 and 27 is perforated with at least one hole 171 to expose the first and second attaching portions 31 and 35. The thickness of the attaching sheets 17 and 27 prevents the exposed first and second attaching portions 31 and 35 attached to each other at the time the foot is wearing the shoe. However, similarly to the above, when the shoe is put on and the foot and sock 10 are properly positioned within the shoe, the first and second attaching portions 31 and 35 can be pressed to attach to each other, so as to provide the anti-slippery effect.

The attaching sheets 17 and 27 may be formed by materials including the thermal plastic material such as PE, PP, PVC, PU, PC, PET, thermoplastic elastomer compounds such as TPU, TPE, TPR, EVA, or foams.

The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention disclosed herein, including configurations ways of the recessed portions and materials and/or designs of the attaching structures. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments. 

1. An anti-slippery footwear, comprising: an insole having a first attaching surface; a sock having a second attaching surface; and an attaching structure including a first attaching portion formed on the first attaching surface and a second attaching portion formed on the second attaching surface, wherein at least one of the first and the second attaching portion is recessed from a corresponding attaching surface, such that the first and second attaching portion are removably attached together only when being pressed against each other.
 2. The footwear of claim 1, wherein the recessed attaching portions include a plurality of holes or stripes and attaching materials formed therein.
 3. The footwear of claim 2, wherein the attaching materials are integrally formed with the insole or sock.
 4. The footwear of claim 1, wherein the attaching structure includes Velcro.
 5. The footwear of claim 1, wherein the insole is fabricated from foam.
 6. The footwear of claim 1, wherein at least one of the first or the second attaching portions includes an attaching material formed on the corresponding attaching surface and a perforated covering sheet partially covering the attaching material.
 7. The footwear of claim 6, wherein the covering sheet is fabricated from thermal plastic material, thermoplastic elastomer compound, EVA or foam.
 8. The footwear of claim 7, wherein the thermal plastic material includes PE, PP, PVC, PU, PC, PET.
 9. The footwear of claim 7, wherein the thermoplastic elastomer compound includes, TPU, TPE, TPR.
 10. A sock, comprising: a bottom surface having at least a recessed portion; and an attaching structure formed within the recessed portion to be removably attachable to a corresponding attaching structure formed on an insole or on an interior bottom surface of a shoe.
 11. The sock of claim 10, wherein the recessed portion includes a plurality of holes or stripes and attaching materials formed therein.
 12. The sock of claim 10, wherein the attaching structure includes Velcro.
 13. The sock of claim 10, wherein the attaching structure includes an attaching material formed on the bottom surface and a perforated covering sheet partially covering the attaching material.
 14. The sock of claim 13, wherein the covering sheet is fabricated from thermal plastic material, thermoplastic elastomer compound, EVA or foam.
 15. The sock of claim 14, wherein the thermal plastic material includes PE, PP, PVC, PU, PC, PET.
 16. The sock of claim 14, wherein the thermoplastic elastomer compound includes, TPU, TPE, TPR.
 17. An insole, comprising: a top surface having at least a recessed portion; and an attaching structure formed within the recessed portion to be removably attachable to a corresponding attaching structure formed on a bottom surface of a sock.
 18. The insole of claim 17, wherein the recessed portion includes a plurality of holes or stripes and attaching materials formed therein.
 19. The insole of claim 17, wherein the attaching structure includes Velcro.
 20. The insole of claim 17, wherein the attaching structure includes an attaching material formed on the corresponding attaching surface and a perforated covering sheet partially covering the attaching material.
 21. The insole of claim 20, wherein the covering sheet is fabricated from thermal plastic material, thermoplastic elastomer compound, EVA or foam.
 22. The insole of claim 21, wherein the thermal plastic material includes PE, PP, PVC, PU, PC, PET.
 23. The insole of claim 21, wherein the thermoplastic elastomer compound includes, TPU, TPE, TPR. 